Download and Install and open Claude Desktop, but don’t sign in. Open Help → Troubleshooting → Enable Developer Mode. Open Developer → Configure Third-Party Inference…. In Connection, set: Inference provider: Gateway Gateway base URL: https://api.ultimateai.org Gateway API key: enter your Ultimate AI key/ObsidianAI Tools Key Click…

ChatGPT Desktop App (aka: Work \ Codex) Download and Install the ChatGPT Desktop App Select "Enter API Key" Enter your API Key from UltimateAI (settings -> account) Add a single line to the top of your config.toml (hint: file-> settings -> open config) Add this…

Select "I have an API Key" bottom right Select "Local / Custom" endpoint Enter the endpoint as "https://api.ultimateai.org/v1" Enter your API key and press "Connect" Click the COG top-right to enter "Settings" Select "Model" and change the provider from "Custom" to "Api.ultimateai.org" You may also…

Gateway: https://chat.ultimateai.org (note: without /v1/messages) Model: claude-sonnet-4-6 (specify the model in this format, not 4.6)

Open-Co-Work, runs locally in an isolated sandbox. How to Install Download and install the latest release for Windows and Mac Open Co-Work Releases OpenSource Repo https://github.com/OpenCoworkAI/open-cowork/releases Once Installed configure the API provider as follows; Select "More Models" Enter your API key from "settings->account" Select "Anthropic"…